Antiskid device for auto-tires



W. F. STAGGERS. Armsmo oEvlcE roR Auo TmEs.

APPLICATION FILED DEC 23 |920 `Patented July 12, 1921. Y

2 SHEETS-SHEET 2 gra/vento@ ltmmgs,

WILLIAM 1i. s'raeem, or mama/ron, wns'r vmamm ANTIsxm nnvIcn-ron. Uro-Tinus.

Appunti ma munter' T o all whom z't may concern.' i

Be it known that I, WILLIAM F. STAG- cnns', a citizen of the United States 'resid- Marion ing at Mannin on, in the county of4 est Virginia, have 4invented and State of new and useful Antiskid Devices for Autol Tires, of which the following is a specification.

The object of my invention is to provide improvedv anti-skid chains which can be manufactured at low cost and which will prolong the life of the tire as compared with other non-skid devices, and' which willv not cut the tire nor cause casingsto break, tlghtening element; l t

.F1g.` 7 's a side elevation of a portion of* nor cause blow-outs, inasmuch as my invention distributesthe pressure equally yover the smooth-curved (or flat in the case of truck` tire chains) bottom surface-.of the anti-skid members.

It is also my object to provide means fori effectually, easily and' quickly applying and tightening `such a chain Ion .the..tire, and easilyremoving same.

It is .furthermore an objectof my invention to lessen the dangeror` accidents by. tires; Y

Figs.1l and 12 are similar-forms to. that shown in Fig. 5,'but' for motor truck tires;-

providing anti-skid. devices-of a modified form for 'preventing skidding lof the 'front' wheels, "when making lshort turns.`

It is further an object of lny'inve'ntion t0- provide as anew article 'of-manufacture 'an emergency. 'non-*skid device which canv be readily applied and which-consists oa single non-skid member of the type shown and similar to that employed in my anti-skid chains.

It is furthermore my object to provideV novel H-shaped and 'I-shaped anti-skid elements, the portions of which, extending longitudinally of the tire, are adapted to prevent side slipping ,or skidding, and the transverse portions of which are adapted to prevent forward sliding, slipping or. skidding of the tire when .the brakes are suddenly applied.

It is also an important object of my invention to provide a 'form of the anti-skid chains adapted for application toni'otor truck tires, both of the. single't'ire and of the dual tire type, and tov provide the novel combination of chains shown` for this purpose. These and other objects'- of my invention I attain by the mechanism illustrated in the accompanying` drawings, in whichp Figure 1 is va side elevatlon of the anti- 'skid chain applied to a` portion of a tire;`

Specication of Letters Patent.

l Patented July 12, A192.1. za, leso. semi no. 43,069. i i

a ortion of the chain ;V Y ig. 3 .is a cross section' through lan'autoinoble tire, showing` my 'invention -applied thereon; i

Fig.v 4 is a detail viewof a modifiedv form of non-,skid member havingthe transverse l traction element of the other formsomitted, that member-not. being necessary on front tlres;

Fig. 5 is a planlview ofv my emergency Fig. 2 is a top plan of` a modification of traction member and its attaching means;

Fig. 6 is a side elevation of my chain the modified form of my invention used on land tires.l

Like numerals designate like parts in each of the several views.

, Referring to Figs. l to 3 in the accoln- `panying dra-wings,- I provide aplurality of H-shaped traction bars 1, all 'portions-of v`modification of the invention fordual truck` `Fi g.13 is a further modification for dual which are preferably triangular in cross` ,i section, and which elements are mounted on and suitably secured to or made integral l with suitable transversely curved fiat relatively light strips 2. It is within the' con-y 'templation of my invention to make the ystrips 2 and 4 of any desirable width, wherei by to .prevent their damaging' the vtire in case of partial or complete deflation, and said strips are preferably flexible. I also 4provide a. plurality of, I-shaped. tractionfbars 3,' all portions of which are preferably triangular in cross section and which are mountedon or are" formed integral with the relatively flat side stripsi Vof any suit able width.

`The transverseport'ionsfof membersv land 'i 3 are suitably shaped to conform to the shape ofthe tireto whichY they are applied,

whether said tire be a fiat motor truck tire ,or the `usual pneumatictire for automobiles,

and fiat strips 2 and 4 are similarly suitably shaped to conform to the tires towhich the anti-skid chains are applied. The `flat strips 2 and 4 are each provided with suitable 5 openings 5, of which there maybe lone orl more, which are releasabl engaged b the hookends of the U-shape or other suitable..

hooks 6, preferably as shown, said members 6 bein attached to connecting'chains 7 and 10 7*. C ains 7 are disposed in the diagonal Varrangement shown and connected, preferably, to the same link of the side chains 8:

- whereby to more securely hold the anti-skid elements to prevent slipping.`

For eifectually securing my device on the tire, I provide at one end of each of the side chains 8, the 'novel toggle joint hooks 9, which have a much wider range of operation than the ordinary lever fastener, thus makdevice is intended for use on front wheels only whereV a transverse traction element is unnecessary.

Referring to Fig. 4 and'Fig.` 5, I may provide as a new article of manufacture, for

35 use as an emergency traction device, ,the

II-'shaped and H-shaped anti-skid devices shown, having its traction elements triangular in cross section, and/having theiiat end strips 2 shaped to conform tothe tire to 40 whichv it is applied, said strips 2 being provided With sultable orifices 5 as shown and adapted to be engaged by suitable hooks -6 which in turn are attached to chains 7 which are connected to a ring 11 which in turn is attached to a suitable strap or chain 12 which can be fastened around the wheel in any suitable manner as by any suitable conventional i buckle or fastener (not shown), or by my hook 9. The manner of applying the device will be apparent from the accompanying drawings illustrating its appearance when mounted on a tire. v

The function ofthe longitudinal portion of the H-sha member 1, and4 of the I-shaped mem r 3 is to prevent skidding 55 `or `side slipping;v and the function of the transverse portions of the aforesaid'rnembers is to prevent any forward skidding or sliding of the car when the brakes are applied, the purpose of the invention being to 6o provide a safety-first or antiskid chain that will prevent accidents under all conditions in whichaccidents are likely to occur. It is within 'the contemplation of my invention. to .suitably modify the shape or curvature 65 of the anti-skid devices hereinafter claimed toemake same conform to the shape or curvature of the various types of automobile, single tread and dual tread tires for trucks for which the device is primarily designed.

The I-shaped, double I-shaped, and H- shaped members being substantially 'e uivalent elements, the expression I-shape as used in the claim hereinafter set forth is to be construed as applying to, and the fore described and' illustrated Ain thefaccompanying drawings.

What I claim 1s:

As a new article of manufacture, an anti-l skid device consisting of I-shaped anti-skid bars, flat strips formed integrally on the ends of said I-shaped bars, opposite short chains hooked to the ends of sal-d flat strips, 85 rings to which said; short chains are attached, and means securedto' said rings for removably mounting the said anti-skid bars on and securing them over the tread of the tire.

WILLIAM F. STAGGERS. 

